Thanks for the info, Matt. How much of that (especially your second post) is specific to the M6 and how much is universal for other GT3 cars?

It's pretty universal across all cars in the game, or at least the majority of it is. There's some things in there that may not work for other cars like Rallycross, Road, some open wheelers etc but the direction of adjustment and theory behind it is the same. The specific values will depend on the car and what works specifically for it, and then also the conditions and your own personal driving style. For instance some cars you can use a more aggressive (lower) Engine Braking value and be fine, some cars like to have or need a bit of Bump Stop kept in, but you can apply the theory of it to other cars for sure. Just fiddle with small adjustments and test to see the impact it has on the car, and whether it improves the handling, your feeling in the car and also your lap times, and go from there.

Don't be scared to sit down and do a bit of trial and error. Read the help text for each setting, then do changes in small increments, save each change separately (you'll end up with a ton of setups but makes it real easy to go back if you want to revert a change/number of changes), and then run 5-10 laps in stable conditions to see what impact it has. If you do that for one thing at a time, you'll get a better understanding of the settings and impact it has on the car to help build setups for certain tracks and also certain weather conditions.

Maybe not the best way, but sure teaches you what the thing you're tuning is doing : try extreme settings (not on your default page lol). Open/closed diff, no/max aero, stiff/soft springs, [...] Then you find a balance.

Before truly understanding what some parts of the car are changing to the gameplay, it's kinda hard to tweak something click by click and notice a real difference. I guess that's why people prefer downloading a setup from someone, so you can tell the difference right away.

As an example, I had to increase the Bump Stop on the right side of the Mustang GT at Texas Speedway to keep it from rolling over(figuratively) into the corners, the car doesn't come with enough springs, it's a street car. Picked up .08 by doing this. Fiddle fiddle.

It's pretty universal across all cars in the game, or at least the majority of it is. There's some things in there that may not work for other cars like Rallycross, Road, some open wheelers etc but the direction of adjustment and theory behind it is the same. The specific values will depend on the car and what works specifically for it, and then also the conditions and your own personal driving style. For instance some cars you can use a more aggressive (lower) Engine Braking value and be fine, some cars like to have or need a bit of Bump Stop kept in, but you can apply the theory of it to other cars for sure. Just fiddle with small adjustments and test to see the impact it has on the car, and whether it improves the handling, your feeling in the car and also your lap times, and go from there.

Don't be scared to sit down and do a bit of trial and error. Read the help text for each setting, then do changes in small increments, save each change separately (you'll end up with a ton of setups but makes it real easy to go back if you want to revert a change/number of changes), and then run 5-10 laps in stable conditions to see what impact it has. If you do that for one thing at a time, you'll get a better understanding of the settings and impact it has on the car to help build setups for certain tracks and also certain weather conditions.

Thanks for this.. Just watched your base tuning vid and adapted this to th BMW myself and it is nice to race with this base setup.

Thanks to this thread I started fiddling more with the Bump Stops, I can only run Ovals so my testing is limited. I ran my BMW M6 GT3 at Texas Speedway and was able to pick up some improvement over my previous PB/WR by adjusting the Bump Stops. I am happy to be able to continually learn new things in this game, what more could be asked for.

Some cars really fly with some bump stop work, was in 2nd to Black Wolf at 0:42.599 to his 0:42.560 (0:00.039 back, things are usually pretty tight at Daytona). Worked on only the bump stops.
Holy Cow! Ok ,this is the most spectacular result so far, usually it's only about a tenth improvement.